Category: Fertilizer Technology

A. Urea
B. Ammonium nitrate
C. Calcium ammonium nitrate (CAN)
D. Ammonium sulphate

A. Nitric acid
B. Phosphoric acid
C. Urea
D. Calcium ammonium nitrate (CAN)

A. Nitrate nitrogen is quick acting
B. Ammoniacal nitrogen is quick acting
C. Nitrate nitrogen is slower acting
D. None of these

A. Meta-phosphoric acid
B. Pyrophosphoric acid
C. No change in it
D. None of these

A. Reversible
B. Catalytic
C. Exothermic
D. Endothermic

A. K2O
B. SiO3
C. V2O5
D. U2O3

A. HNO3 & limestone
B. CO2 & H2SO4
C. HNO3 & NH4Cl
D. CO2 & KNO3

A. Nitrogen is normally supplied in fertiliser either in Ammoniacal or the nitrate form, from
which the soil takes it up in the form of ammonium ions or nitrate ions and forms amino acids
B. Calcium present in the fertiliser helps in correcting the soil acidity
C. Particle size range of a good granular fertiliser is 10-15 mesh and it contains less moisture as
compared to finely divided powder form of fertiliser
D. Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having byproduct
coke ovens

A. Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence
the plant roots penetrate with difficulty
B. Large excess use of nitrogenous fertiliser in land causes the problem of diarrhoea and cyanosis
C. Application of large excess of Potassic fertiliser in soil increases the valuable carotene in
fruits and vegetables
D. Cereal crops grown on alkaline soil absorb higher amount of fluorides thereby spreading
fluorosis

A. Nitrogenous fertiliser
B. Potassic fertiliser
C. Phosphatic fertiliser
D. None of these